Hand knowledge of the paper bag printing Hand knowledge of the paper bag printing
At present, mobile paper bags are widely used in clothing, food, shoes, gifts, tobacco and alcohol, drugs and other commodities package
Loaded. Some hand-held bag to go through offset, Indian gold, silver printing, hot stamping, laminating, creasing, folding, bonding, playing
Hole in the gas eyes, wearing ribbons and other multi-channel processing operations. In order to create more beautiful hand bag, printing, production
Should observe the following.
1. Regulate the printing pressure
Hand paper bag printing commonly used quantification of the white board for the 250 ~ 400g/m2 paper production, relatively thick paper, for printing
Pressure regulator made more stringent requirements. Regulation, the printing plate cylinder and the rubber roller center distance remains unchanged,
Just adjust embossing rollers and the rubber roller center distance. In the printing quantity for the 250 ~ 450g/m2 white board paper, it can
The center of the drum from the widening of 0.20 ~ 0.40mm. In addition, because less surface roughness paperboard, its close-range
Is also far from a good degree of coated paper, therefore, we must pay attention to the printing of exerting more pressure on the corresponding. Adjust the printing pressure,
Can be used also increase or decrease the thickness of rubber roller bag lining method.
2. Readjust the offset feeding part of the
Printing white board paper, coated paper, paperboard, kraft paper, because a larger quantity of paper, so should the Department of Feeder
Sub-absorbing paper mouth, the mouth of the wind blowing paper the corresponding large number of transfer; sub-paper to replace the nozzle diameter and larger, thicker rubber
Apron; pull gauge diameter of compression spring could be replaced by a larger model, in order to achieve the feed does not swing, take the paper steady purpose.
Whiteboard paper printing, the offset double-controller, the gap should be a corresponding increase in side-lay and the former regulations of the tongue and the pressure paper
The distance between the input board to be increased some. Paperboard to prevent more than one plug in between the impression cylinder and the rubber roller,
Result in a "stuffy car" fault. Pairs Zhang control wheel and the distance between the feed roller can not be less than 2 sheets of paper thickness, it can not be greater than the
3 of paper thickness, or hog the passage of the paper will stop; or pairs of sheets of paper from the surface through the controller, while the
Controller, power supply shock has no contact would not achieve control of double-purpose. Furthermore, it should clear up pairs of Zhang control
System of wheels, feed roller surface and the power control at two shock surfaces of dust or insulation to prevent the loss of double-control system
Ling.
3. To prevent the back rub dirty
Hand paper bag printing will always be a full version on the ground, making it easy on the back rub dirty. Therefore, we should try to use the original barrel
Ink, the appropriate add some to the thickening agent, anti-viscosity, without 6 # transfer ink oil, dry hot weather Do not add oil.
In addition, the method can be used to solve the dusting. It should be noted, dusting the surface of light will affect the print
Ze degrees, and pollute the environment, will offset part of the income paper wear and tear, sticky dirty.
Note that the proper arrangements for the printing color sequence. In order to avoid imprinting quit when the collision with each other on the back of paper
Surface rub dirty, they should first printed text, line version, and then print the field version.
4. Arrangements for the printing color sequence
In arranging the printing color sequence, in addition to the back rub to be considered dirty, we must also note the following points.
(1) The first printed halftone, after printing lines, on the ground. When the bag on the existing four-color overprint halftone images, there are
Text, field patterns, lines, in order to protect the overprint and accurate, reducing the impact of paper stretching should first printing
Halftone, and then printing lines, field, and be able to prioritize and passed, first tackling the difficult part.
(2) The first printing dark color, light colored after printing. As the light colored ink hiding power is weak, on the back of trapping, the slightly
Overprint are not allowed, not easy to detect, overprint effect is good.
(3) If they are white board paper, cardboard, kraft paper, such as uneven moisture, wrinkle uneven surface, poor strength Citation
Away from powder, hair loss, they can print a blank first hit the water to address the quality of monochrome printing accident.
